Snr8.5

Stinging Nettle Root

Urtica dioica (Nettle Root)

Herbal support for prostate health and urinary symptoms, often combined with saw palmetto for BPH.

longevityprostatemen's healthBPHurinary
Last reviewed: January 1, 2025
8.5/10
36+ studies
Evidence
high
Safety
300-600mg root extract
Dose
4-12 weeks
Time to Effect
Standardized root extract
Best Form

Stinging Nettle Root (different from nettle leaf used for allergies) has been used in Europe for decades to support prostate health. It works through different mechanisms than saw palmetto, making them complementary. Research shows benefits for urinary symptoms associated with BPH. Also used for general prostate support and hormonal balance.

Mechanisms of Action

⚖️
SHBG Modulation

Affects hormone binding in prostate

🔬
Aromatase Modulation

May affect estrogen production

📉
Growth Factor Inhibition

May slow prostate cell growth

Recommended Dose

300-600mg root extract

120mg900mg

Optimal Timing

  • With meals
  • Split into 2-3 doses

Take with food

Best Form

Standardized root extract

Alternatives: Dried root capsules, Tincture

Use ROOT extract specifically — leaf is different and used for allergies. Often combined with saw palmetto.

Duration

Minimum: 4 weeks

Optimal: 12 weeks

Cycling: Not required

Note: Can be taken any time with food.

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💧
Urinary Improvement

Better urinary flow

4-8 weeks
55% of users notice thispositive
🌙
Reduced Nighttime Urination

Fewer nighttime bathroom trips

4-8 weeks
50% of users notice thispositive
High SafetyMax safe dose: Up to 900mg/day used safely
🟡
Pregnant/nursing

Not typically used; insufficient data

Who Should NOT Take This

  • Known allergy or hypersensitivity to Stinging Nettle Root or related compounds
  • Pregnancy and breastfeeding
  • Kidney disease

Drug Interactions

Blood thinnersmild

May have mild effects on blood clotting

Blood pressure medicationsmild

May have mild diuretic effects

Diabetes medicationsmild

May affect blood sugar

Possible Side Effects

GI upsetuncommon

Tip: Take with food

Mild diuresisuncommon

Tip: Normal effect

Warnings

  • Use ROOT extract — not leaf (different uses)
  • Get proper prostate evaluation before self-treating symptoms

Top studies from 36+ peer-reviewed papers

meta-analysisn=401
DOI

Ziaei R et al. • Phytotherapy research : PTR (2020)

“However, further studies are needed to confirm the veracity of these results.© 2019 John Wiley & Sons, Ltd.”
Key Findings:
  • The results of the meta-analysis revealed a significant reduction in FBS concentrations (weighted mean difference [WMD]: -18.01 mg/dl, 95% confidence interval [CI]: -30.04 to -5.97, p < .001, I2 = 94.6%) following nettle supplementation.
  • The findings of the present study suggest that nettle supplementation may be effective in controlling FBS for T2DM patients.
  • However, further studies are needed to confirm the veracity of these results.© 2019 John Wiley & Sons, Ltd.
meta-analysis
DOI

Nirumand MC et al. • International journal of molecular sciences (2018)

“Further investigations are required to confirm the safety and efficacy of these compounds.”
Key Findings:
  • The main underlying mechanisms of these dietary plants and their isolated phytonutrients in the management of urolithiasis include diuretic, antispasmodic, and antioxidant activity, as well as an inhibitory effect on crystallization, nucleation, and aggregation of crystals.
  • The results as presented in this review demonstrate the promising role of dietary plants and phytophenols in the prevention and management of kidney stones.
  • Further investigations are required to confirm the safety and efficacy of these compounds.
systematic-reviewn=785
DOI

Cameron M et al. • The Cochrane database of systematic reviews (2013)

“Although the mechanism of action of the topical medicinal plant products provides a rationale basis for their use in the treatment of osteoarthritis, the quality and quantity of current research studies of effectiveness are insufficient.”
Key Findings:
  • Mean pain in the ibuprofen group was 44.2 points on a 100 point scale; treatment with Arnica gel reduced the pain by 4 points after three weeks: mean difference (MD) -3.8 points (95% confidence intervals (CI) -10.1 to 2.5), absolute reduction 4% (10% reduction to 3% increase).
  • Hand function was 7.5 points on a 30 point scale in the ibuprofen-treated group; treatment with Arnica gel reduced function by 0.4 points (MD -0.4, 95% CI -1.75 to 0.95), absolute improvement 1% (6% improvement to 3% decline)).
  • At four weeks follow-up, mean pain in the placebo group was 46 points on a 100 point scale; treatment with Capsicum extract reduced pain by 1 point (MD -1, 95% CI -6.8 to 4.8), absolute reduction of 1% (7% reduction to 5% increase).
  • Mean knee function in the placebo group was 34.8 points on a 96 point scale at four weeks; treatment with Capsicum extract improved function by a mean of 2.6 points (MD -2.6, 95% CI -9.5 to 4.2), an absolute improvement of 3% (10% improvement to 4% decline).
systematic-review
DOI

Di Lorenzo C et al. • Critical reviews in food science and nutrition (2013)

“In conclusion, it is advisable to conduct further studies with more homogeneous population and larger number of subjects by avoiding the heterogeneity of the herbal preparations considered.”
Key Findings:
  • The bibliographic search found no paper regarding the anti-inflammatory effects of Calendula officinalis L. and Symphytum officinalis L. by oral use.
  • In spite of the long-term traditional use for inflammatory disorders, Curcuma longa L. and Harpagophytum procumbens L. warrant further investigation, whereas the efficacy of Urtica dioica L, even if the available data on hard endpoints are promising, requires other trials.
  • Boswellia serrata Roxb. was found to be the most promising, since it shows the best efficacy for the treatment of pain/inflammatory conditions.
  • In conclusion, it is advisable to conduct further studies with more homogeneous population and larger number of subjects by avoiding the heterogeneity of the herbal preparations considered.
systematic-reviewn=85
DOI

Rashidi AA et al. • Pakistan journal of biological sciences : PJBS (2013)

“However, efficacy and safety of the most plants used in the treatment of diabetes are not sufficient.”
Key Findings:
  • The quality of Randomized Controlled Trials (RCTs) assessed by using the Jadad scale.
  • Among the RCTs studies, the best results in glycemic control was found in Aloe vera, Citrullus colocynthus, Plantago ovata, Silybum marianum, Rheum ribes and Urtica dioica.
  • The majority of plants that have been studied for antidiabetic activity showed promising results.
  • However, efficacy and safety of the most plants used in the treatment of diabetes are not sufficient.
31
Total Studies
8.5/10
Avg Quality
12-922
Sample Size Range
2005-2024
Research Span

Study Type Distribution

RCT
22
Systematic Review
4
Meta-Analysis
3
Crossover
2

This information is for educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before starting any supplement.